#include "StdAfx.h"
#include "UIText.h"

namespace DuiLib {
CTextUI::CTextUI() : m_nLinks(0), m_nHoverLink(-1) {
    m_uTextStyle = DT_WORDBREAK;
    m_rcTextPadding.left = 2;
    m_rcTextPadding.right = 2;
    ::ZeroMemory(m_rcLinks, sizeof(m_rcLinks));
}

CTextUI::~CTextUI() {
}

LPCTSTR CTextUI::GetClass() const {
    return DUI_CTR_TEXT;
}

LPVOID CTextUI::GetInterface(LPCTSTR pstrName) {
    if( _tcscmp(pstrName, DUI_CTR_TEXT) == 0 ) return static_cast<CTextUI*>(this);
    return CLabelUI::GetInterface(pstrName);
}

UINT CTextUI::GetControlFlags() const {
    if( IsEnabled() && m_nLinks > 0 ) return UIFLAG_SETCURSOR;
    else return 0;
}

CDuiString* CTextUI::GetLinkContent(int iIndex) {
    if( iIndex >= 0 && iIndex < m_nLinks ) return &m_sLinks[iIndex];
    return NULL;
}

void CTextUI::DoEvent(TEventUI& event) {
    if( !IsMouseEnabled() && event.Type > UIEVENT__MOUSEBEGIN && event.Type < UIEVENT__MOUSEEND ) {
        if( m_pParent != NULL ) m_pParent->DoEvent(event);
        else CLabelUI::DoEvent(event);
        return;
    }

    if( event.Type == UIEVENT_SETCURSOR ) {
        for( int i = 0; i < m_nLinks; i++ ) {
            if( ::PtInRect(&m_rcLinks[i], event.ptMouse) ) {
                ::SetCursor(::LoadCursor(NULL, IDC_HAND));
                return;
            }
        }
    }
    if( event.Type == UIEVENT_BUTTONDOWN || event.Type == UIEVENT_DBLCLICK && IsEnabled() ) {
        for( int i = 0; i < m_nLinks; i++ ) {
            if( ::PtInRect(&m_rcLinks[i], event.ptMouse) ) {
                Invalidate();
                return;
            }
        }
    }
    if( event.Type == UIEVENT_BUTTONUP && IsEnabled() ) {
        for( int i = 0; i < m_nLinks; i++ ) {
            if( ::PtInRect(&m_rcLinks[i], event.ptMouse) ) {
                m_pManager->SendNotify(this, DUI_MSGTYPE_LINK, i);
                return;
            }
        }
    }
    if( event.Type == UIEVENT_CONTEXTMENU ) {
        return;
    }
    // When you move over a link
    if( m_nLinks > 0 && event.Type == UIEVENT_MOUSEMOVE && IsEnabled() ) {
        int nHoverLink = -1;
        for( int i = 0; i < m_nLinks; i++ ) {
            if( ::PtInRect(&m_rcLinks[i], event.ptMouse) ) {
                nHoverLink = i;
                break;
            }
        }

        if(m_nHoverLink != nHoverLink) {
            m_nHoverLink = nHoverLink;
            Invalidate();
            return;
        }
    }
    if( event.Type == UIEVENT_MOUSELEAVE ) {
        if( m_nLinks > 0 && IsEnabled() ) {
            if(m_nHoverLink != -1) {
                if( !::PtInRect(&m_rcLinks[m_nHoverLink], event.ptMouse) ) {
                    m_nHoverLink = -1;
                    Invalidate();
                    if (m_pManager) m_pManager->RemoveMouseLeaveNeeded(this);
                } else {
                    if (m_pManager) m_pManager->AddMouseLeaveNeeded(this);
                    return;
                }
            }
        }
    }

    CLabelUI::DoEvent(event);
}

void CTextUI::PaintText(HDC hDC) {
    if( m_sText.IsEmpty() ) {
        m_nLinks = 0;
        return;
    }

    if( m_dwTextColor == 0 ) m_dwTextColor = m_pManager->GetDefaultFontColor();
    if( m_dwDisabledTextColor == 0 ) m_dwDisabledTextColor = m_pManager->GetDefaultDisabledColor();

    if( m_sText.IsEmpty() ) return;

    m_nLinks = lengthof(m_rcLinks);
    RECT rc = m_rcItem;
    rc.left += m_rcTextPadding.left;
    rc.right -= m_rcTextPadding.right;
    rc.top += m_rcTextPadding.top;
    rc.bottom -= m_rcTextPadding.bottom;
    if( IsEnabled() ) {
        if( m_bShowHtml )
            CRenderEngine::DrawHtmlText(hDC, m_pManager, rc, m_sText, m_dwTextColor, \
                                        m_rcLinks, m_sLinks, m_nLinks, m_iFont, m_uTextStyle);
        else
            CRenderEngine::DrawText(hDC, m_pManager, rc, m_sText, m_dwTextColor, \
                                    m_iFont, m_uTextStyle);
    } else {
        if( m_bShowHtml )
            CRenderEngine::DrawHtmlText(hDC, m_pManager, rc, m_sText, m_dwDisabledTextColor, \
                                        m_rcLinks, m_sLinks, m_nLinks, m_iFont, m_uTextStyle);
        else
            CRenderEngine::DrawText(hDC, m_pManager, rc, m_sText, m_dwDisabledTextColor, \
                                    m_iFont, m_uTextStyle);
    }
}
}
